Portable drill rig



J. E. FEUCHT PORTABLE DRILL RIG March 1, 1955 '5 Sheets-Sheet 1 Filed July 26, 1954 mmvroa 'JACOB E. FEUGHT ATTORNEY March l,- 1955 Filed July 26, 1954 P I Ji m Q U.

J. E. F EUCHT PORTABLE DRILL RIG 5 Sheets-Sheet 2 I INVENTOR. JACOB E. FEUCHT 8 ATTORNEY 5 Sheets-Sheet 3 8. E o E &

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ATTORNEY March 1, 1955 J. E. FEUCHT PORTABLE DRILL RIG Filed July 26, 1954 March 1955 J. E. FEUCHT ,703,222

PORTABLE DRILL RIG Filed July 26, 1954 w 5 Sheets-Sheet 4 INVENTOR. JACOB E. FEUCHT ATTORNEY March 1955 J. E. FEUCHT 2,703,222

PORTABLE DRILL RIG Filed July 26, 1954 5 Sheets-Sheet 5 III 4| 45 46 FIG! I FIG. I3

INVENTOR.

JACOB E. FEUCHT ATTORNEY v United States Patent PORTABLE DRILL RIG Jacob E. Feucht, Garfield Heights, Ohio, assignor, by

mesne assignments, to Westinghouse Air Brake Company, a corporation of Pennsylvania Application July 26, 1954, Serial No. 445,563

9 Claims. (Cl. 255-51) This invention relates broadly to rock drilling equipment, but more particularly to an improved portable drill rig for a drill of the drifter type, whereby the latter may be supported through a Wide range of drilling positions with respect to the work.

.As will be hereinafter set forth in more detail, this invention is also directed to the provision of an improved rock drill support especially adapt-able for tunneling operations wherein all drilled holes are preferably parallel and perpendicular to the face of the drift.

The primary object of this invention is to produce an adjustable drill supporting boom frame of the parallelogram type, enabling the drill to be moved through a wide range of drilling positions while automatically remaining perpendicular to a vertical transverse plane such as the face of the work, to assure drilling of parallel holes.

Another object of this invention is to produce a drill support readily swingable into any drilling position about a substantially horizontal axis, the support being adjustable to move the drill radially with respect to said axis and of the parallelogram type to automatically maintain the drill parallel to the axis.

Another object of this invention is to provide such a drill support mounted on a carrying frame rotatable on a horizontal axis, whereby the drill may be positioned for drilling holes in a circular pattern, the rotation of the frame being eifected by any suitable motor preferably of fluid actuated rotary type.

Another object of this invention is to provide a drill support mounted on a rotatable carrying frame with pressure fluid actuated devices for efiecting radial adjustment 23f the drill relative tothe rotary axis of the carrying rame.

Other objects of this invention not at this time more particularly enumerated will be clearly understood from the following detailed description.

In the drawings which illustrate the invention:

Figure l is a side elevational view of a drilling apparatus constructed in accordance with the invention.-

Figure 2 is a view similar to Figure 1, but showing the drill in a different position.

Figure 3 is a plan view of the drilling apparatus shown in Figure 1, with illustrative positions of the drill and its support shown in dotted lines.

Figures 4 and 5 are views corresponding to Figures 1 and 2. with the drill shown in different positions.

Figure 6 is an enlarged cross-sectional view taken on line 6-6 in Figure 1.

Figure 7 is an enlarged longitudinal sectional view taken on line 7-7 in Figure 1.

Figure 8 is an enlarged cross-sectional view taken on line 88 in Figure l.

Figure 9 is a cross-sectional view taken on line 99 in Figure 7.

Figure 10 is an enlarged longitudinal sectional view taken on line 10 10 in Figure 1.

Figure 11 is an enlarged longitudinal sectional view taken on line 1111 in Figure 1.

Figure 12 is an enlarged cross-sectional view taken on line 12--12 in Figure 1.

Figure 13 is an enlarged cross-sectional view taken on line 1313 in Figure 1 and looking in the direction of the arrows.

Figure 14 is an enlarged pictorial view looking in the direction of the arrows 1414 in Figure 4.

Referring to Figure 1, the invention broadly comprises a rig or carriage A, an adjustable drill supporting boom frame B and a drilling apparatus C. As shown, carriage A preferably comprises a base frame 20 supported by four wheels 21 operatively mounted on two parallel wheel axles 22 to form a Wheel supported carriage adapted to be moved on tracks such as 23. Fixed on frame 20 between the two wheel axles 22, there is an upwardly extending structure 24 of welded channel bars supporting on its upper end two relatively large bearings 25 in which is journalled a shaft 26 parallel to the longitudinal center axis of carriage 20 and located in a vertical plane coincident with that axis. Between bearings 25, shaft 26 has fixed thereon by a key 27, Figure 6, a relatively large worm gear 28 in mesh with a worm 29 operatively carried by the structure 24 below the shaft 26 and rotatable by a pressure fluid actuated motor 30 which is also carried by the structure 24.

Shaft 26 extends beyond one of the bearings 25 where it is welded to a vertical turn table 3 1 rotatable within a vertical plane transversed to the carriage 20 just beyond one end thereof. This table is preferably rectangular and made of two parallel channel bars 32 united by two parallel relatively heavy plates 33 welded thereon. As seen in Figure 1, shaft 26 is preferably welded to the center of the left hand plate 33 at right angles therewith. One longitudinal end of the turn table is counterbalanced by a relatively heavy weight 34 fixed thereon, while the opposite end carries the boom frame B about to be described. From the foregoing, it will be understood that the turn table 31 supported by carriage 20 may be rotated on the axis of shaft 26 by motor 30, worm 29 and worm gear 28, which worm and gear are self locking to retain table in any desired position about shaft 26.

The boom frame B is of a parallelogram type comprising three alike straight tubular members or legs 36, 37 and 38, all parallel to one another with the legs 36 and 38 as seen in Figure 1 located within the same vertical plane, and the legs 36 and 37 as seen in Figure 3 located within the same horizontal plane. In other words, as seen in Figure 3, leg 36 is located at the intersection of two right angle planes with the other legs located one in each of the planes and equally spaced from the leg 36. These legs extend longitudinally or endwise from the outer face of turn table 31 away from carriage 29, and have their inner ends movably connected to the end portion of the table 31 opposite the counter Weight 34, and therefore in offset relationship with the shaft 26, by swivel joints of any well known type. One of such join-ts is shown in detail in Figure 11. It comprises a relatively short and solid shank 40 extending through the parallel plates 33 of the table and is fixed thereto by means of a weld. This shank extends beyond the outer plate 33 where it is terminated by two spaced parallel lugs 41 of size and shape corresponding to similar lugs 42 formed on the inner end of each leg 36, 37 and 38. The sets of lugs 41 and 42 are at right angles from each other, with the lugs 42 rotatable on a relatively large cross pin 43 carried thereby, and the lugs 41 similarly mounted on a smaller cross pin 44 which also extends through the cross pin 43. To prevent inward deformation of the lugs, the swivel joint also includes a spacer 45 fitting closely between both sets of lugs. Preferably lugs 42 are an integral part of a shank 46 which is welded or otherwise aflixed within the inner end of each leg. The outer ends of the legs of the boom frame B are also connected by similar joints to a substantially square rigid and vertical yoke 47 clearly shown in Figure 8, which is made up of two horizontal tubular members 48 welded to two vertical members 49. As shown in Figures 7 and 9, each swivel connection between the outer ends of the legs and a the yoke 47 is a replica of the connection above described and shown in Figure 11, except that the shank 40' in this instance is welded to the yoke 47, while the shank 46' is welded within the outer end of the leg. Since the lugs and cross pins are the same as shown in Figure 11, they have been given the same reference numerals.

Legs 36 and 37 of boom frame B are interconnected by a diagonal telescoping jack member 50, which is shown in Figure 10 to comprise a cylinder 52 closed by end pieces 53 and 54 and having slidable therein a piston 55 provided with a piston rod 56 slidable through the end piece 54 and ended by an apertured terminal 57. As shown in Figure 12, leg 36 has welded thereon an upwardly extending trunnion 58 on which is rotatably fitted the apertured piston rod terminal 57 retained thereon by a spring clip 59. A similar trunnion 60, shown in Figures 3 and 10, is also welded on the leg 37 near the inner end thereof on which is fitted the apertured end piece 53 of cylinder 52. Pressure fluid may be admitted into one end of cylinder 52 to effect extension of the jack member 50 through a port 61 provided within end piece 53, and a conduit 62 fixed to end piece 53 by a gland nut 63. Similarly pressure fluid may be admitted into the other end of cylinder 52 to effect retraction of jack member 50 through a port 64 and conduit 65 fixed to the end piece 54 by a gland nut 66.

Another jack member 67 similar to jack member 50 extends obliquely between the lower end portion .of the table 31 in Figure l to the middle portion of the legs 36 and 37. This jack which also includes a cylinder having a fluid actuated piston slidable therein, has one end of its cylinder 52' swivelly connected to the turn table 31 by a swivel joint 68 of the type above described and shown in detail in Figure '11. The outer end of jack member 67, that is, the outer end of its piston rod 56", is similarly connected by a swivel joint 69 to the two legs 36 and 37 at a place substantially mid-way their length as clearly shown in Figures 2 and 14. Y

The drilling apparatus C is of the usual type well known in this art and, other than illustrating the purposes and advantages of the improved drill rig, it forms no part of the invention. Briefly, this drilling apparatus includes an elongated drill guiding frame 76 formed on its upper side with laterally spaced parallel guides 75 extending the full length thereof on which are fitted the corresponding guideways of a rock drill 77, thereby enabling guided slidable movement of the drill on its frame. Mounted in the drill is the usual drill steel 78 subjected to impacts and rotation for drilling holes in the work. The under part of drill guiding frame 76 is equipped with a feeding mechanism generally designated by 79 which is operatively associated with the rock drill 77 by any suitable means for imparting feeding motion to the drill relative to its guiding frame 76. As clearly shown in Figure 8, the feeding mechanism 79 is provided with the usual depending trunnion 80 formed with a conical end adapted to fit in a conical socket 81 of a saddle or bracket 82 fixed on the upper horizontal member 48 of the yoke 47. Bracket 82 is also provided with the usual clamp, not shown,

through which trunnion 80 may be fixed to the bracket.

In practice, the connection between the drilling apparatus C or yoke 47, which includes trunnion 80 and bracket 82, is such as to position the drilling apparatus or more particularly, the center axis of the drill 77 parallel to the center axis of the turn table shaft 26. To that end,

vertical yoke 47 is parallel to table 31 and consequently at right angles with drilling apparatus C.

The general mode of operation of the improved drill rig is as follows: The drilling apparatus C operatively supported by the parallelogram boom frame B which is carried by the turn table 31, can readily be moved to and from the face of the work by the wheel carriage A. Preparatory to the drilling operation, drill 77 is first moved to the rear end of its guiding frame 76 as shown in Figure 1, and the entire rig moved forwardly for contact or near contact of the drill steel 78 with the work face. Thereafter carriage 20 is locked on the tracks 23 by means of wheel wedges or the like and the drilling apparatus shifted to the desired drilling position. By the provision of the parallelogram boom frame B, drilling apparatus C may be raised or lowered, or more particularly may be moved inward or outward within two right angle planes while remaining parallel to the center axis of shaft '26. These two planes, by virtue of the rotation of table 31, are positionable anywhere about the center axis of shaft 26, thereby permitting the drilling of a multiplicity of parallel holes without necessitating resetting of the drilling apparatus to a parallel position prior to the drilling of each hole.

By providing within the parallelogram bOOm frame the two fluid actuated telescoping jack members 50 and 67, the drilling apparatus may'readily be moved and maintained to any desired drilling position without man.- ual effort of the operator. For instance, from the position shown in Figure 1, the drilling apparatus can readily be raised to the position shown in Figure 2 by effecting extension of the jack member 67. In this instance, and with reference to Figure 10 which shows jack member similar to 67, the operator, by manipulating any suitable valve, not shown, will control admission and exhaust of pressure fluid to and from cylinder 52 through conduits 62 and 65, to effect extension .of jack member 67 and the rise of the drilling apparatus C. When it is desired to lower the drilling apparatus, control of the pressure fluid to and from cylinder 52 is effected in reversed order. Since the inner end of jack 67 is swivelly connected to turn table 31 and its outer end to the two legs 36 and 37 midway of the length thereof, it will be readily understood that extension .or retraction of the iack 67 in the manner explained above will cause upward or downward adjustment of the drilling apparatus C as seen in Figure 1. Since the drill 77, when positioned as shown in full lines in Figure 3, has its center axis within the same place as the rotary axis of the turn table 31, it may be said that extension or retraction of jack member 67 may effect radial movement of the drilling apparatus relative to the rotary axis of the turn table.

With reference to Figure 3, it will be understood that when it is desired to move the drilling apparatus laterally or within an horizontal plane, jack 50, which in the normal position of the drilling apparatus, as shown in solid lines, is substantially half-way between its fully retracted and extended positions, may be retracted or extended in the manner explained above in connection with jack 67, thereby causing the drilling apparatus to assume any lateral position possible between the two extreme ones shown in dotted lines in Figure 3.

In addition to the possible movement or adjustment of the drilling apparatus by virtue of the jack members 50 and 67 within two right angle planes, further adjustment may be had by rotation .of the turn table 31 on its center shaft 26. In this instance, motor 30 may be energized to rotate table 31 through the self-locking mechanism including worm 29 and worm gear 28, thereby enabling drilling apparatus C to assume any position about center axis of the turn table 31, one of which is shown in Figure 4, and upon extension of its jack member 67, to assume the position shown in Figure 5.

From the foregoing description, it will be understood that by virtue of the three legs 36, 37 and 38 swivelly connected at one end to the turn table 31 and at the other to the drilling apparatus carrying yoke 47, which legs form a parallelogram type of a boom frame adjustable by the jacks 50 and 67, together with the rotary adjustment of the turn table 31 on its center axis or shaft 26, the drilling apparatus C may be positioned to drill parallel holes anywhere within a circular area having as its radius the greatest distance between the rotary axis of table 31 and the center axis of drill 77 possible by the extension of either jack 50 or 67. It will also be understood that in any angular position of the drilling apparatus C about the rotary axis of table 31, that is, in any position of the drilling apparatus resulting from the rotation of the table 31 on its center axis, the drilling apparatus through the jack members 50 and 67 is adjustable within the two right angle planes above referred to.

In practice, both telescoping jack members 50 and 67 as well as motor 3.0, are actuated either by hydraulic fluid or compressed air. In either case, after actuating fluid has effected extension or retraction, either partial or complete, of the jacks 50 and 67 to move the drilling apparatus to the desired drilling position, it is caused to remain in the cylinder on both sides of piston to lock the piston against further movement and assure a fixed and steady position of the drilling apparatus during drilling operations.

While the preferred form of the invention has been shown and described, it will be understood that variation in detail and form may be made without departure from the Spirit and scope of the invention as herein claimed.

I claim:

1. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft for rotation within a vertical plane transverse to said carriage and beyond one end thereof, an elongated parallelogram type boom frame extending endwise from said table away from said carriage having one end swivelly connected to said table in oflset relationship with said shaft, a rigid yoke having a drilling apparatus carried thereby with the center axis of the drill thereof parallel to the rotary axis of said table, swivel connecting means between the other end of said boom frame and yoke, and a pair of fluid actuated telescoping jack members within said boom frame adapted to extend or retract one for effecting movement of said drilling apparatus within a first plane and the other for effecting movement of said drilling apparatus within a second plane normal to said first one. 7

2. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft for rotation within a vertical plane transverse to said carriage and beyond one end thereof, an elongated parallelogram type boom frame including three parallel legs, one located at the intersection of two right angle planes and the others located one in each of said last planes, said boom frame extending endwise from said table away from said carriage and having the inner ends of said legs swivelly connected to said table in offset relationship with said shaft, a rigid vertical yoke parallel to said table, swivel connecting means between the outer ends of said legs and said yoke, a drilling apparatus carried by said yoke, and a pair of fluid actuated telescoping jack members adapted to lock axially, extend or retract; one of said jack members having one end swivelly connected to two of said legs and the other end swivelly connected to said table adjacent the inner ends of said legs for supporting and moving said drilling apparatus within a plane parallel to one of said right angle planes, and the other jack member having its ends pivotally connected to said two legs in diagonal relationship therewith for supporting and moving said drilling apparatus within a plane parallel to the other of said right angle planes.

3. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft for rotation within a vertical plane transverse to said carriage and beyond one end thereof, an elongated parallelogram type boom frame including three parallel legs with a first one located at the intersection of two right angle planes and the others located one in each of said last planes, said legs having their inner ends swivelly connected to said table and extending angularly therefrom away from said carriage in ofiset relationship with said shaft, a rigid yoke swivelly connected at the outer ends of said legs, a drilling apparatus carried by said yoke, and a pair of fiuid actuated jack members each comprising cylinder and piston elements adapted to be locked axially, extended or retracted by controlled supply and exhaust of pressure fiuid to and from said cylinder, one of said jack members having one end swivelly connected to two of said legs including said first one and the other end swivelly connected to said table adjacent the inner ends of said legs for either locking or moving said boom frame within a plane parallel to one of said right angle planes, and the other jack member having its ends pivotally connected to said two legs in diagonal relationship therewith for either locking or moving said boom frame within a plane parallel to the other of said right angle planes.

4. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft for rotation Within a vertical plane transverse to said carriage and beyond one end thereof, an elongated parallelogram boom frame including a plurality of parallel rigid legs having their inner ends swivelly connected to said table in offset relationship with said shaft, a rigid yoke swivelly connected to and carried by the outer ends of said legs, a drilling apparatus carried by said yoke swingable in any position about said shaft by virtue of the rotation of said table, and a pair of supporting jack members for said boom frame, one in each of two right angle planes, said jack members being axially movable for moving said drilling apparatus within planes parallel to said right angle planes.

5. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft for rotation within a vertical plane transverse to said carriage and beyond one end thereof, a rigid yoke longitudinally spaced from said table relative to its rotary axis and away from said carriage, a drilling apparatus carried by said yoke, a parallelogram type of boom frame having its ends swivelly connected, one to said yoke to support the same and the other to said table in olfset relationship with said shaft, said drilling apparatus being swingable in any position about the rotary axis of said table by virtue of the rotation thereof, and a jack member having its ends swivelly connected one to said table and the other to said boom frame to support same, said jack member being axially adjustable for moving said drilling apparatus radially relative to said rotary axis.

6. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft for rotation within a vertical plane transverse to said carriage and beyond one end thereof, a parallelogram type of boom frame having its inner end swivelly connected to said table in offset relationship with its rotary axis, a rigid yoke swivelly connected to and carried by the outer end of said boom frame, a drilling apparatus carried by said yoke swingable in any position about said rotary axis by virtue of the rotation of said table, and a brace like jack member operatively connected to said table and boom frame for normally preventing relative movement therebetween, said jack member being axially adjustable for swinging said boom frame on its inner end to effect radial movement of the drilling apparatus relative to said rotary axis.

7. A rock drill rig comprising, in combination, a carriage having an upright structure fixed thereon near one end thereof, bearings fixed on the upper end of said structure having a shaft journalled therein, a turn table carried by said shaft outside of said structure for rotation within a plane normal to said shaft and transverse to said carriage, a parallelogram type of boom frame extending endwise from said table away from said carriage including a mounting of three parallel rigid legs having their inner ends swivelly connected to said table in offset relationship with said shaft, a rigid yoke swivelly connected to the outer ends of said legs carrying a drilling apparatus fixed thereon in parallel relationship with the rotary axis of said table, said leg mounting including one leg located at the intersection of two right angle planes and the others located one in each of said last planes whereby said drilling apparatus may be moved while automatically remaining parallel to said rotary axis within other planes parallel to said right angle planes and a pair of brace like jack members normally supporting said boom frame against movement relative to said table, said jack members being axially movable for effecting movement of said drilling apparatus within said other planes.

8. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, a substantially rectangular turn table carried by said structure for rotation within a vertical plane transverse to said carriage beyond one end thereof, an elongated articulated parallelogram type boom frame extending endwise from said table away from said carriage having its inner end swivelly connected to said table near one narrow end thereof, a rigid yoke swivelly connected to the outer end of said boom frame, a drilling apparatus carried by said yoke, and a pair of jack members as a part of said boom frame with at least one of them extending operatively between said boom frame and table, each jack member including cooperating cylinder and piston elements, means for locking said elements against relative motion and thereby immobilize said boom frame relative to said table, and means for effecting relative motion of said elements to cause said jack members to independently extend or retract and impart motion to said boom frame other than that resulting from the rotation of said table.

9. A rock drill rig comprising, in combination, a wheel supported carriage having an upright structure fixed thereon near one end thereof, a substantially rectangular turn table carried by said structure for rotation within a vertical plane transverse to said carriage beyond one end thereof, an elongated articulated parallelogram type boom frame extending endwise from said table away from said carriage and including a plurality of parallel legs having their inner ends swivelly connected to said table near one narrow end thereof, a "rigid yoke swivelly connected to the outer ends of said legs, a drilling apparatus carried by said yoke, and a pair of jack members one pivotally connected between two of said legs and the other between said boom frame and table, each jack member including cooperating cylinder and piston elements, means for locking said elements against relative motion and thereby immobilize said boom frame relative to said table, and means for effecting relative motion of said elements to cause said 2,606,078 Brock Aug. 5, 1952 2,674,500 Hukari Apr. 6, 1954 2,690,896 Bissell et a1 Oct. 5, 1954 

